drawing in subwindows
Malgorzata Sturgill
margaret at cs.utah.edu
Wed Aug 15 02:00:19 AEST 1990
Hi,
I am trying to draw in subwindows ( open with swinopen ). I finally
managed to persuade my code to draw, but unfortunately it does not draw where
I expect. I have included a piece of code to ilustrate. All this program does
it opens a 300x300 parent window (black) and then opens a white 200x200 white
subwindow. the program is then supposed to draw the diagonals of the subwindow
in red. Well it does not. It does draw a cross, but it does not fill the whole
window. Am I just doing something stupid?
Any help would be great,
m.
------------------ Code Follows ---------------------------------------------
#include <stdio.h>
#include <gl.h>
#include <device.h>
long parent, child;
main(argc, argv)
int argc;
char *argv[];
{
short data;
foreground();
prefposition(500,800,500,800);
parent = winopen("parent") ;
gconfig();
reshapeviewport();
color(BLACK);
clear();
child = swinopen(parent);
winposition(50,250,50,250);
gconfig();
color(WHITE);
clear();
qenter(REDRAW,(short)child);
while (TRUE){
while (qtest()){
switch(qread(&data)){
case REDRAW:
if ((long)data == parent){
winset(parent);
reshapeviewport();
color(BLACK);
clear();
break;
}
if ((long)data == child){
redr();
printf("child redrawn\n");
}
break;
default:
break;
}
}
}
}
redr(){
winset(child);
reshapeviewport();
color(WHITE);
clear();
color(RED);
move2(0,0);
draw2(199,199);
move2(0,199);
draw2(199,0);
}
Malgorzata Marek Sturgill margaret at cs.utah.edu
margaret at ms.uky.edu
"A sphere isn't that simple when you get into higher dimensions
- it's a bit non-flat."
- Annonymous
Malgorzata Marek Sturgill margaret at cs.utah.edu
margaret at ms.uky.edu
"A sphere isn't that simple when you get into higher dimensions
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